Key-wheel type-writer.



M. FREUDENBBRG. I KEY WHEEL TYPE WRITER.

APPLICATION FILED Now-26,1912,

1 ,O9.5,099. Patnted Apr. 28, 1914.

I 1 WW0;

(1/ W l y UNITED STATES PATENT OFFICE. MOS? m3 KEY VHEiBL Tran-wail: RG, U s

Specification of Letters Patent. I Application filed November 26, 1913. Serial No. 803,252.

Patented A r. 28, 1914.

Y To all w/[om it may concern:

Be it known that I, Mosns FRnUnnNnnRo,

a subject. of the Emperor of Russia, and a Russia, have in- Improvement 1n of which the folresident of St. Petersburg, vented atnew and useful Key-Wheel Type-VVriter's, lowing is a specification.

My invention relates to typewriters of the keynvheel type and consists specifically in an improved form of platen and operating means therefor.

The object-of the invention is to provide improved paper carrying and printing means, in which the paper is readily and accurately fed through the machine.

In the drawings, only those parts of a typewriter necessary to describe the imthe key wheel type,

provement are shown.

Figure l is a side view of a typewriter of fitted with my improvement; Fig. 2. is a top view of the same; and

. Fig. 3 is a perspective view of my improved form of platen.

1 represents my improved platen, WlllCh is roughly in the form of a rectangular frame. It is pivotally mounted by trunnions 2, which engage with recesses in the sides of the typewriter carriage. Joining the two lateral members of the platen frame is a rod 3. This frame is made longenough to carry within it the feed rollers for the paper.

An elbow-lever vided a groove 4 rests the rod 3.

5, fulcrumed at 6, has roat its upper end, in w, ich

lever 5 consists of a relatively long ledge 7. It isevident that downward pressure at anypoint along this ledge will depress it, move the vertical arm of the lever 5 to the right, and thus acting on rod 3 of the platen frame, move it to the right in the y direction of the arrow 13.

The levers 8, fulcrumed at 9, rest on the ledge 7, and serve to transmit to saidledge impulses from the key lever 10; the key lever 10 is fulcrumcd at 11 and may be provided with a retracting spring 12.

14 represents the key wheel of the usual type and actuated in the well-kn own way.

16is'a longitudinal feed roller, mounted in the carriage similarly to the platen frame 1. A sheet metal guide plate '15 for the paper is located as shown in Fig. 1, which is provided with slots, not shown, to permit the-feed rollers 18 to contact with the arm of each of said levers The horizontal arm 7 of the roller 16 and so grip the paper at several points.

17 represents a sheet of paper inserted ready for writing.

', transmitted from various points along the ledge 7, the lever 5, thence to rod 3, whereupon the platen pusnes the paper against so printing is effected. long platen bar readily eifects such printing, irrespective of at what point in its travel the carriage may be. At the same time, the long platen frame simplifies the passage of the paper through the machine.

I claim I 1. In a key wheel typewriter, the combi: nation with a carriage, of a platen mounted thereon, of means for reciprocating said platen, comprising a bent lever, the upper arm of said lever carrying means for slidingly engaging said platen, the lower arm of said lever consisting of a ledge, substantially parallel to the axis of travel of the carriage, a series of levers, one arm of each of said levers resting on said ledge, the. other engaging with its individual key and adapted to be raised upon depression of said key.

2. In a key wheel typewriter, the combination with acarriage, of a platen on a substantially rectangular frame mounted on said carriage, feed rollers adapted to remain stationary during the reciprocation of said frame, and means for reciprocating said frame, upon depression of a key, com prising a bent lever pivoted to the body of the typewriter, the upper arm of said lever carrying means for slidingly engaging said frame, the lower arm of said lever consisting of a relatively long ledge, substantially parallel to the line of travel of the carriage, a series of levers, pivotedto the body of the typewriter, one arm of each of said levers resting upon said ledge of said bent lever and adapted to depress said ledge, the other arm of each of said levers engaging with its individual ke and adapted to he raised when said key is depressed.

3..In a key wheel typewriter, the combination with a series of keys, each pivoted between its ends, of a corresponding series of intermediate levers, each pivoted between its ends and each engaging with its respective key lever, a bent lever, carrying an arm consisting of,a relatively long ledge, said ledge adaptedto engage each of said intermediate levers, a reciprocating platen, the. second arm of said bent lever carrying means for slidingly engaging said platen.

In testimony whereof, have signed my name to this specification in the presence of two subscribing Witnesses.

' MOSES FREUDENBERG.

5 \Vitnesses H. A. Lovmcnmn,

ALEXANDER TSCI-IEXALOFF.

4 Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. 0. 

